bsd/kern/kern_mib.c

   1 /*
   2  * Copyright (c) 2000-2007 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /*-
  29  * Copyright (c) 1982, 1986, 1989, 1993
  30  *      The Regents of the University of California.  All rights reserved.
  31  *
  32  * This code is derived from software contributed to Berkeley by
  33  * Mike Karels at Berkeley Software Design, Inc.
  34  *
  35  * Quite extensively rewritten by Poul-Henning Kamp of the FreeBSD
  36  * project, to make these variables more userfriendly.
  37  *
  38  * Redistribution and use in source and binary forms, with or without
  39  * modification, are permitted provided that the following conditions
  40  * are met:
  41  * 1. Redistributions of source code must retain the above copyright
  42  *    notice, this list of conditions and the following disclaimer.
  43  * 2. Redistributions in binary form must reproduce the above copyright
  44  *    notice, this list of conditions and the following disclaimer in the
  45  *    documentation and/or other materials provided with the distribution.
  46  * 3. All advertising materials mentioning features or use of this software
  47  *    must display the following acknowledgement:
  48  *      This product includes software developed by the University of
  49  *      California, Berkeley and its contributors.
  50  * 4. Neither the name of the University nor the names of its contributors
  51  *    may be used to endorse or promote products derived from this software
  52  *    without specific prior written permission.
  53  *
  54  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  55  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  56  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  57  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  58  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  59  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  60  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  61  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  62  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  63  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  64  * SUCH DAMAGE.
  65  *
  66  *      @(#)kern_sysctl.c       8.4 (Berkeley) 4/14/94
  67  */
  68
  69 #include <sys/param.h>
  70 #include <sys/kernel.h>
  71 #include <sys/systm.h>
  72 #include <sys/sysctl.h>
  73 #include <sys/proc_internal.h>
  74 #include <sys/unistd.h>
  75
  76 #if defined(SMP)
  77 #include <machine/smp.h>
  78 #endif
  79
  80 #include <sys/param.h>  /* XXX prune includes */
  81 #include <sys/systm.h>
  82 #include <sys/kernel.h>
  83 #include <sys/malloc.h>
  84 #include <sys/proc.h>
  85 #include <sys/file_internal.h>
  86 #include <sys/vnode.h>
  87 #include <sys/unistd.h>
  88 #include <sys/ioctl.h>
  89 #include <sys/namei.h>
  90 #include <sys/tty.h>
  91 #include <sys/disklabel.h>
  92 #include <sys/vm.h>
  93 #include <sys/sysctl.h>
  94 #include <sys/user.h>
  95 #include <mach/machine.h>
  96 #include <mach/mach_types.h>
  97 #include <mach/vm_param.h>
  98 #include <kern/task.h>
  99 #include <vm/vm_kern.h>
 100 #include <vm/vm_map.h>
 101 #include <vm/vm_protos.h>
 102 #include <mach/host_info.h>
 103 #include <kern/pms.h>
 104 #include <pexpert/device_tree.h>
 105 #include <pexpert/pexpert.h>
 106 #include <kern/sched_prim.h>
 107 #include <console/serial_protos.h>
 108
 109 extern vm_map_t bsd_pageable_map;
 110
 111 #include <sys/mount_internal.h>
 112 #include <sys/kdebug.h>
 113
 114 #include <IOKit/IOPlatformExpert.h>
 115 #include <pexpert/pexpert.h>
 116
 117 #include <machine/config.h>
 118 #include <machine/machine_routines.h>
 119 #include <machine/cpu_capabilities.h>
 120
 121 #include <mach/mach_host.h>             /* for host_info() */
 122
 123 #if defined(__i386__) || defined(__x86_64__)
 124 #include <i386/cpuid.h> /* for cpuid_info() */
 125 #endif
 126
 127 #if defined(__arm__) || defined(__arm64__)
 128 #include <arm/cpuid.h>          /* for cpuid_info() & cache_info() */
 129 #endif
 130
 131
 132 #ifndef MAX
 133 #define MAX(a, b) (a >= b ? a : b)
 134 #endif
 135
 136 /* XXX This should be in a BSD accessible Mach header, but isn't. */
 137 extern unsigned int vm_page_wire_count;
 138
 139 static int      cputhreadtype, cpu64bit;
 140 static uint64_t cacheconfig[10], cachesize[10];
 141 static int      packages;
 142
 143 static char *   osenvironment = NULL;
 144 static uint32_t osenvironment_size = 0;
 145 static int      osenvironment_initialized = 0;
 146
 147 static uint32_t ephemeral_storage = 0;
 148 static uint32_t use_recovery_securityd = 0;
 149
 150 static struct {
 151         uint32_t ephemeral_storage:1;
 152         uint32_t use_recovery_securityd:1;
 153 } property_existence = {0, 0};
 154
 155 SYSCTL_EXTENSIBLE_NODE(, 0, sysctl, CTLFLAG_RW | CTLFLAG_LOCKED, 0,
 156     "Sysctl internal magic");
 157 SYSCTL_EXTENSIBLE_NODE(, CTL_KERN, kern, CTLFLAG_RW | CTLFLAG_LOCKED, 0,
 158     "High kernel, proc, limits &c");
 159 SYSCTL_EXTENSIBLE_NODE(, CTL_VM, vm, CTLFLAG_RW | CTLFLAG_LOCKED, 0,
 160     "Virtual memory");
 161 SYSCTL_EXTENSIBLE_NODE(, CTL_VFS, vfs, CTLFLAG_RW | CTLFLAG_LOCKED, 0,
 162     "File system");
 163 SYSCTL_EXTENSIBLE_NODE(, CTL_NET, net, CTLFLAG_RW | CTLFLAG_LOCKED, 0,
 164     "Network, (see socket.h)");
 165 SYSCTL_EXTENSIBLE_NODE(, CTL_DEBUG, debug, CTLFLAG_RW | CTLFLAG_LOCKED, 0,
 166     "Debugging");
 167 SYSCTL_NODE(, CTL_HW, hw, CTLFLAG_RW | CTLFLAG_LOCKED, 0,
 168     "hardware");
 169 SYSCTL_EXTENSIBLE_NODE(, CTL_MACHDEP, machdep, CTLFLAG_RW | CTLFLAG_LOCKED, 0,
 170     "machine dependent");
 171 SYSCTL_NODE(, CTL_USER, user, CTLFLAG_RW | CTLFLAG_LOCKED, 0,
 172     "user-level");
 173
 174 SYSCTL_NODE(_kern, OID_AUTO, bridge, CTLFLAG_RW | CTLFLAG_LOCKED, 0,
 175     "bridge");
 176
 177 #define SYSCTL_RETURN(r, x)     SYSCTL_OUT(r, &x, sizeof(x))
 178
 179 /******************************************************************************
 180  * hw.* MIB
 181  */
 182
 183 #define CTLHW_RETQUAD   (1U << 31)
 184 #define CTLHW_LOCAL     (1U << 30)
 185
 186 #define HW_LOCAL_CPUTHREADTYPE  (1 | CTLHW_LOCAL)
 187 #define HW_LOCAL_PHYSICALCPU    (2 | CTLHW_LOCAL)
 188 #define HW_LOCAL_PHYSICALCPUMAX (3 | CTLHW_LOCAL)
 189 #define HW_LOCAL_LOGICALCPU     (4 | CTLHW_LOCAL)
 190 #define HW_LOCAL_LOGICALCPUMAX  (5 | CTLHW_LOCAL)
 191 #define HW_LOCAL_CPUTYPE        (6 | CTLHW_LOCAL)
 192 #define HW_LOCAL_CPUSUBTYPE     (7 | CTLHW_LOCAL)
 193 #define HW_LOCAL_CPUFAMILY      (8 | CTLHW_LOCAL)
 194 #define HW_LOCAL_CPUSUBFAMILY   (9 | CTLHW_LOCAL)
 195
 196
 197 /*
 198  * Supporting some variables requires us to do "real" work.  We
 199  * gather some of that here.
 200  */
 201 static int
 202 sysctl_hw_generic(__unused struct sysctl_oid *oidp, __unused void *arg1,
 203     int arg2, struct sysctl_req *req)
 204 {
 205         char dummy[65];
 206         int  epochTemp;
 207         ml_cpu_info_t cpu_info;
 208         int val, doquad;
 209         long long qval;
 210         host_basic_info_data_t hinfo;
 211         kern_return_t kret;
 212         mach_msg_type_number_t count = HOST_BASIC_INFO_COUNT;
 213
 214         /*
 215          * Test and mask off the 'return quad' flag.
 216          * Note that only some things here support it.
 217          */
 218         doquad = arg2 & CTLHW_RETQUAD;
 219         arg2 &= ~CTLHW_RETQUAD;
 220
 221         ml_cpu_get_info(&cpu_info);
 222
 223 #define BSD_HOST 1
 224         kret = host_info((host_t)BSD_HOST, HOST_BASIC_INFO, (host_info_t)&hinfo, &count);
 225
 226         /*
 227          * Handle various OIDs.
 228          *
 229          * OIDs that can return int or quad set val and qval and then break.
 230          * Errors and int-only values return inline.
 231          */
 232         switch (arg2) {
 233         case HW_NCPU:
 234                 if (kret == KERN_SUCCESS) {
 235                         return SYSCTL_RETURN(req, hinfo.max_cpus);
 236                 } else {
 237                         return EINVAL;
 238                 }
 239         case HW_AVAILCPU:
 240                 if (kret == KERN_SUCCESS) {
 241                         return SYSCTL_RETURN(req, hinfo.avail_cpus);
 242                 } else {
 243                         return EINVAL;
 244                 }
 245         case HW_LOCAL_PHYSICALCPU:
 246                 if (kret == KERN_SUCCESS) {
 247                         return SYSCTL_RETURN(req, hinfo.physical_cpu);
 248                 } else {
 249                         return EINVAL;
 250                 }
 251         case HW_LOCAL_PHYSICALCPUMAX:
 252                 if (kret == KERN_SUCCESS) {
 253                         return SYSCTL_RETURN(req, hinfo.physical_cpu_max);
 254                 } else {
 255                         return EINVAL;
 256                 }
 257         case HW_LOCAL_LOGICALCPU:
 258                 if (kret == KERN_SUCCESS) {
 259                         return SYSCTL_RETURN(req, hinfo.logical_cpu);
 260                 } else {
 261                         return EINVAL;
 262                 }
 263         case HW_LOCAL_LOGICALCPUMAX:
 264                 if (kret == KERN_SUCCESS) {
 265                         return SYSCTL_RETURN(req, hinfo.logical_cpu_max);
 266                 } else {
 267                         return EINVAL;
 268                 }
 269         case HW_LOCAL_CPUTYPE:
 270                 if (kret == KERN_SUCCESS) {
 271                         return SYSCTL_RETURN(req, hinfo.cpu_type);
 272                 } else {
 273                         return EINVAL;
 274                 }
 275         case HW_LOCAL_CPUSUBTYPE:
 276                 if (kret == KERN_SUCCESS) {
 277                         return SYSCTL_RETURN(req, hinfo.cpu_subtype);
 278                 } else {
 279                         return EINVAL;
 280                 }
 281         case HW_LOCAL_CPUFAMILY:
 282         {
 283                 int cpufamily = 0;
 284 #if defined (__i386__) || defined (__x86_64__)
 285                 cpufamily = cpuid_cpufamily();
 286 #elif defined(__arm__) || defined(__arm64__)
 287                 {
 288                         cpufamily = cpuid_get_cpufamily();
 289                 }
 290 #else
 291 #error unknown architecture
 292 #endif
 293                 return SYSCTL_RETURN(req, cpufamily);
 294         }
 295         case HW_LOCAL_CPUSUBFAMILY:
 296         {
 297                 int cpusubfamily = 0;
 298 #if defined (__i386__) || defined (__x86_64__)
 299                 cpusubfamily = CPUSUBFAMILY_UNKNOWN;
 300 #elif defined(__arm__) || defined(__arm64__)
 301                 {
 302                         cpusubfamily = cpuid_get_cpusubfamily();
 303                 }
 304 #else
 305 #error unknown architecture
 306 #endif
 307                 return SYSCTL_RETURN(req, cpusubfamily);
 308         }
 309         case HW_PAGESIZE:
 310         {
 311                 vm_map_t map = get_task_map(current_task());
 312                 val = vm_map_page_size(map);
 313                 qval = (long long)val;
 314                 break;
 315         }
 316         case HW_CACHELINE:
 317                 val = (int)cpu_info.cache_line_size;
 318                 qval = (long long)val;
 319                 break;
 320         case HW_L1ICACHESIZE:
 321                 val = (int)cpu_info.l1_icache_size;
 322                 qval = (long long)cpu_info.l1_icache_size;
 323                 break;
 324         case HW_L1DCACHESIZE:
 325                 val = (int)cpu_info.l1_dcache_size;
 326                 qval = (long long)cpu_info.l1_dcache_size;
 327                 break;
 328         case HW_L2CACHESIZE:
 329                 if (cpu_info.l2_cache_size == UINT32_MAX) {
 330                         return EINVAL;
 331                 }
 332                 val = (int)cpu_info.l2_cache_size;
 333                 qval = (long long)cpu_info.l2_cache_size;
 334                 break;
 335         case HW_L3CACHESIZE:
 336                 if (cpu_info.l3_cache_size == UINT32_MAX) {
 337                         return EINVAL;
 338                 }
 339                 val = (int)cpu_info.l3_cache_size;
 340                 qval = (long long)cpu_info.l3_cache_size;
 341                 break;
 342         case HW_TARGET:
 343                 bzero(dummy, sizeof(dummy));
 344                 if (!PEGetTargetName(dummy, 64)) {
 345                         return EINVAL;
 346                 }
 347                 dummy[64] = 0;
 348                 return SYSCTL_OUT(req, dummy, strlen(dummy) + 1);
 349         case HW_PRODUCT:
 350                 bzero(dummy, sizeof(dummy));
 351                 if (!PEGetProductName(dummy, 64)) {
 352                         return EINVAL;
 353                 }
 354                 dummy[64] = 0;
 355                 return SYSCTL_OUT(req, dummy, strlen(dummy) + 1);
 356
 357                 /*
 358                  * Deprecated variables.  We still support these for
 359                  * backwards compatibility purposes only.
 360                  */
 361 #if XNU_TARGET_OS_OSX && defined(__arm64__)
 362         /* The following two are kludged for backward
 363          * compatibility. Use hw.product/hw.target for something
 364          * consistent instead. */
 365
 366         case HW_MACHINE:
 367                 bzero(dummy, sizeof(dummy));
 368                 if (proc_platform(req->p) == PLATFORM_IOS) {
 369                         /* iOS-on-Mac processes don't expect the macOS kind of
 370                          * hw.machine, e.g. "arm64", but are used to seeing
 371                          * a product string on iOS, which we here hardcode
 372                          * to return as "iPad8,6" for compatibility.
 373                          *
 374                          * Another reason why hw.machine and hw.model are
 375                          * trouble and hw.target+hw.product should be used
 376                          * instead.
 377                          */
 378
 379                         strlcpy(dummy, "iPad8,6", sizeof(dummy));
 380                 }
 381                 else {
 382                         strlcpy(dummy, "arm64", sizeof(dummy));
 383                 }
 384                 dummy[64] = 0;
 385                 return SYSCTL_OUT(req, dummy, strlen(dummy) + 1);
 386         case HW_MODEL:
 387                 bzero(dummy, sizeof(dummy));
 388                 if (!PEGetProductName(dummy, 64)) {
 389                         return EINVAL;
 390                 }
 391                 dummy[64] = 0;
 392                 return SYSCTL_OUT(req, dummy, strlen(dummy) + 1);
 393 #else
 394         case HW_MACHINE:
 395                 bzero(dummy, sizeof(dummy));
 396                 if (!PEGetMachineName(dummy, 64)) {
 397                         return EINVAL;
 398                 }
 399                 dummy[64] = 0;
 400                 return SYSCTL_OUT(req, dummy, strlen(dummy) + 1);
 401         case HW_MODEL:
 402                 bzero(dummy, sizeof(dummy));
 403                 if (!PEGetModelName(dummy, 64)) {
 404                         return EINVAL;
 405                 }
 406                 dummy[64] = 0;
 407                 return SYSCTL_OUT(req, dummy, strlen(dummy) + 1);
 408 #endif
 409         case HW_USERMEM:
 410         {
 411                 int usermem = (int)(mem_size - vm_page_wire_count * page_size);
 412
 413                 return SYSCTL_RETURN(req, usermem);
 414         }
 415         case HW_EPOCH:
 416                 epochTemp = PEGetPlatformEpoch();
 417                 if (epochTemp == -1) {
 418                         return EINVAL;
 419                 }
 420                 return SYSCTL_RETURN(req, epochTemp);
 421         case HW_VECTORUNIT: {
 422                 int vector = cpu_info.vector_unit == 0? 0 : 1;
 423                 return SYSCTL_RETURN(req, vector);
 424         }
 425         case HW_L2SETTINGS:
 426                 if (cpu_info.l2_cache_size == UINT32_MAX) {
 427                         return EINVAL;
 428                 }
 429                 return SYSCTL_RETURN(req, cpu_info.l2_settings);
 430         case HW_L3SETTINGS:
 431                 if (cpu_info.l3_cache_size == UINT32_MAX) {
 432                         return EINVAL;
 433                 }
 434                 return SYSCTL_RETURN(req, cpu_info.l3_settings);
 435         default:
 436                 return ENOTSUP;
 437         }
 438         /*
 439          * Callers may come to us with either int or quad buffers.
 440          */
 441         if (doquad) {
 442                 return SYSCTL_RETURN(req, qval);
 443         }
 444         return SYSCTL_RETURN(req, val);
 445 }
 446
 447 /* hw.pagesize and hw.tbfrequency are expected as 64 bit values */
 448 static int
 449 sysctl_pagesize
 450 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
 451 {
 452         vm_map_t map = get_task_map(current_task());
 453         long long l = vm_map_page_size(map);
 454         return sysctl_io_number(req, l, sizeof(l), NULL, NULL);
 455 }
 456
 457 static int
 458 sysctl_pagesize32
 459 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
 460 {
 461         long long l;
 462 #if __arm64__
 463         l = (long long) (1 << page_shift_user32);
 464 #else /* __arm64__ */
 465         l = (long long) PAGE_SIZE;
 466 #endif /* __arm64__ */
 467         return sysctl_io_number(req, l, sizeof(l), NULL, NULL);
 468 }
 469
 470 static int
 471 sysctl_tbfrequency
 472 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
 473 {
 474         long long l = gPEClockFrequencyInfo.timebase_frequency_hz;
 475         return sysctl_io_number(req, l, sizeof(l), NULL, NULL);
 476 }
 477
 478 /*
 479  * Called by IOKit on Intel, or by sysctl_load_devicetree_entries()
 480  */
 481 void
 482 sysctl_set_osenvironment(unsigned int size, const void* value)
 483 {
 484         if (osenvironment_size == 0 && size > 0) {
 485                 osenvironment = zalloc_permanent(size, ZALIGN_NONE);
 486                 if (osenvironment) {
 487                         memcpy(osenvironment, value, size);
 488                         osenvironment_size = size;
 489                 }
 490         }
 491 }
 492
 493 void
 494 sysctl_unblock_osenvironment(void)
 495 {
 496         os_atomic_inc(&osenvironment_initialized, relaxed);
 497         thread_wakeup((event_t) &osenvironment_initialized);
 498 }
 499
 500 /*
 501  * Create sysctl entries coming from device tree.
 502  *
 503  * Entries from device tree are loaded here because SecureDTLookupEntry() only works before
 504  * PE_init_iokit(). Doing this also avoids the extern-C hackery to access these entries
 505  * from IORegistry (which requires C++).
 506  */
 507 __startup_func
 508 static void
 509 sysctl_load_devicetree_entries(void)
 510 {
 511         DTEntry chosen;
 512         void const *value;
 513         unsigned int size;
 514
 515         if (kSuccess != SecureDTLookupEntry(0, "/chosen", &chosen)) {
 516                 return;
 517         }
 518
 519         /* load osenvironment */
 520         if (kSuccess == SecureDTGetProperty(chosen, "osenvironment", (void const **) &value, &size)) {
 521                 sysctl_set_osenvironment(size, value);
 522         }
 523
 524         /* load ephemeral_storage */
 525         if (kSuccess == SecureDTGetProperty(chosen, "ephemeral-storage", (void const **) &value, &size)) {
 526                 if (size == sizeof(uint32_t)) {
 527                         ephemeral_storage = *(uint32_t const *)value;
 528                         property_existence.ephemeral_storage = 1;
 529                 }
 530         }
 531
 532         /* load use_recovery_securityd */
 533         if (kSuccess == SecureDTGetProperty(chosen, "use-recovery-securityd", (void const **) &value, &size)) {
 534                 if (size == sizeof(uint32_t)) {
 535                         use_recovery_securityd = *(uint32_t const *)value;
 536                         property_existence.use_recovery_securityd = 1;
 537                 }
 538         }
 539 }
 540 STARTUP(SYSCTL, STARTUP_RANK_MIDDLE, sysctl_load_devicetree_entries);
 541
 542 static int
 543 sysctl_osenvironment
 544 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
 545 {
 546 #if defined(__x86_64__)
 547 #if (DEVELOPMENT || DEBUG)
 548         if (os_atomic_load(&osenvironment_initialized, relaxed) == 0) {
 549                 assert_wait((event_t) &osenvironment_initialized, THREAD_UNINT);
 550                 if (os_atomic_load(&osenvironment_initialized, relaxed) != 0) {
 551                         clear_wait(current_thread(), THREAD_AWAKENED);
 552                 } else {
 553                         (void) thread_block(THREAD_CONTINUE_NULL);
 554                 }
 555         }
 556 #endif
 557 #endif
 558         if (osenvironment_size > 0) {
 559                 return SYSCTL_OUT(req, osenvironment, osenvironment_size);
 560         } else {
 561                 return EINVAL;
 562         }
 563 }
 564
 565 static int
 566 sysctl_ephemeral_storage
 567 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
 568 {
 569         if (property_existence.ephemeral_storage) {
 570                 return SYSCTL_OUT(req, &ephemeral_storage, sizeof(ephemeral_storage));
 571         } else {
 572                 return EINVAL;
 573         }
 574 }
 575
 576 static int
 577 sysctl_use_recovery_securityd
 578 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
 579 {
 580         if (property_existence.use_recovery_securityd) {
 581                 return SYSCTL_OUT(req, &use_recovery_securityd, sizeof(use_recovery_securityd));
 582         } else {
 583                 return EINVAL;
 584         }
 585 }
 586
 587 static int
 588 sysctl_use_kernelmanagerd
 589 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
 590 {
 591 #if CONFIG_ARROW
 592         static int use_kernelmanagerd = 1;
 593 #else
 594         static int use_kernelmanagerd = 0;
 595 #endif
 596         static bool once = false;
 597
 598         if (!once) {
 599                 kc_format_t kc_format;
 600                 PE_get_primary_kc_format(&kc_format);
 601                 if (kc_format == KCFormatFileset) {
 602                         use_kernelmanagerd = 1;
 603                 } else {
 604                         PE_parse_boot_argn("kernelmanagerd", &use_kernelmanagerd, sizeof(use_kernelmanagerd));
 605                 }
 606                 once = true;
 607         }
 608         return SYSCTL_OUT(req, &use_kernelmanagerd, sizeof(use_kernelmanagerd));
 609 }
 610
 611 #define HW_LOCAL_FREQUENCY             1
 612 #define HW_LOCAL_FREQUENCY_MIN         2
 613 #define HW_LOCAL_FREQUENCY_MAX         3
 614 #define HW_LOCAL_FREQUENCY_CLOCK_RATE  4
 615
 616 static int
 617 sysctl_bus_frequency
 618 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, __unused struct sysctl_req *req)
 619 {
 620
 621 #if DEBUG || DEVELOPMENT || (!defined(__arm__) && !defined(__arm64__))
 622         switch (arg2) {
 623         case HW_LOCAL_FREQUENCY:
 624                 return SYSCTL_RETURN(req, gPEClockFrequencyInfo.bus_frequency_hz);
 625         case HW_LOCAL_FREQUENCY_MIN:
 626                 return SYSCTL_RETURN(req, gPEClockFrequencyInfo.bus_frequency_min_hz);
 627         case HW_LOCAL_FREQUENCY_MAX:
 628                 return SYSCTL_RETURN(req, gPEClockFrequencyInfo.bus_frequency_max_hz);
 629         case HW_LOCAL_FREQUENCY_CLOCK_RATE:
 630                 return SYSCTL_OUT(req, &gPEClockFrequencyInfo.bus_clock_rate_hz, sizeof(int));
 631         default:
 632                 return EINVAL;
 633         }
 634 #else
 635         return ENOENT;
 636 #endif
 637 }
 638
 639 static int
 640 sysctl_cpu_frequency
 641 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, __unused struct sysctl_req *req)
 642 {
 643
 644 #if DEBUG || DEVELOPMENT || (!defined(__arm__) && !defined(__arm64__))
 645         switch (arg2) {
 646         case HW_LOCAL_FREQUENCY:
 647                 return SYSCTL_RETURN(req, gPEClockFrequencyInfo.cpu_frequency_hz);
 648         case HW_LOCAL_FREQUENCY_MIN:
 649                 return SYSCTL_RETURN(req, gPEClockFrequencyInfo.cpu_frequency_min_hz);
 650         case HW_LOCAL_FREQUENCY_MAX:
 651                 return SYSCTL_RETURN(req, gPEClockFrequencyInfo.cpu_frequency_max_hz);
 652         case HW_LOCAL_FREQUENCY_CLOCK_RATE:
 653                 return SYSCTL_OUT(req, &gPEClockFrequencyInfo.cpu_clock_rate_hz, sizeof(int));
 654         default:
 655                 return EINVAL;
 656         }
 657 #else
 658         return ENOENT;
 659 #endif
 660 }
 661
 662 /*
 663  *  This sysctl will signal to userspace that a serial console is desired:
 664  *
 665  *    hw.serialdebugmode = 1 will load the serial console job in the multi-user session;
 666  *    hw.serialdebugmode = 2 will load the serial console job in the base system as well
 667  */
 668 static int
 669 sysctl_serialdebugmode
 670 (__unused struct sysctl_oid *oidp, __unused void *arg1, __unused int arg2, struct sysctl_req *req)
 671 {
 672         uint32_t serial_boot_arg;
 673         int serialdebugmode = 0;
 674
 675         if (PE_parse_boot_argn("serial", &serial_boot_arg, sizeof(serial_boot_arg)) &&
 676             (serial_boot_arg & SERIALMODE_OUTPUT) && (serial_boot_arg & SERIALMODE_INPUT)) {
 677                 serialdebugmode = (serial_boot_arg & SERIALMODE_BASE_TTY) ? 2 : 1;
 678         }
 679
 680         return sysctl_io_number(req, serialdebugmode, sizeof(serialdebugmode), NULL, NULL);
 681 }
 682
 683 /*
 684  * hw.* MIB variables.
 685  */
 686 SYSCTL_PROC(_hw, HW_NCPU, ncpu, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, 0, HW_NCPU, sysctl_hw_generic, "I", "");
 687 SYSCTL_PROC(_hw, HW_AVAILCPU, activecpu, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, 0, HW_AVAILCPU, sysctl_hw_generic, "I", "");
 688 SYSCTL_PROC(_hw, OID_AUTO, physicalcpu, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, 0, HW_LOCAL_PHYSICALCPU, sysctl_hw_generic, "I", "");
 689 SYSCTL_PROC(_hw, OID_AUTO, physicalcpu_max, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, 0, HW_LOCAL_PHYSICALCPUMAX, sysctl_hw_generic, "I", "");
 690 SYSCTL_PROC(_hw, OID_AUTO, logicalcpu, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, 0, HW_LOCAL_LOGICALCPU, sysctl_hw_generic, "I", "");
 691 SYSCTL_PROC(_hw, OID_AUTO, logicalcpu_max, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, 0, HW_LOCAL_LOGICALCPUMAX, sysctl_hw_generic, "I", "");
 692 SYSCTL_INT(_hw, HW_BYTEORDER, byteorder, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (int *)NULL, BYTE_ORDER, "");
 693 SYSCTL_PROC(_hw, OID_AUTO, cputype, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, 0, HW_LOCAL_CPUTYPE, sysctl_hw_generic, "I", "");
 694 SYSCTL_PROC(_hw, OID_AUTO, cpusubtype, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, 0, HW_LOCAL_CPUSUBTYPE, sysctl_hw_generic, "I", "");
 695 SYSCTL_INT(_hw, OID_AUTO, cpu64bit_capable, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, &cpu64bit, 0, "");
 696 SYSCTL_PROC(_hw, OID_AUTO, cpufamily, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, 0, HW_LOCAL_CPUFAMILY, sysctl_hw_generic, "I", "");
 697 SYSCTL_PROC(_hw, OID_AUTO, cpusubfamily, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, 0, HW_LOCAL_CPUSUBFAMILY, sysctl_hw_generic, "I", "");
 698 SYSCTL_OPAQUE(_hw, OID_AUTO, cacheconfig, CTLFLAG_RD | CTLFLAG_LOCKED, &cacheconfig, sizeof(cacheconfig), "Q", "");
 699 SYSCTL_OPAQUE(_hw, OID_AUTO, cachesize, CTLFLAG_RD | CTLFLAG_LOCKED, &cachesize, sizeof(cachesize), "Q", "");
 700 SYSCTL_PROC(_hw, OID_AUTO, pagesize, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, 0, 0, sysctl_pagesize, "Q", "");
 701 SYSCTL_PROC(_hw, OID_AUTO, pagesize32, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, 0, 0, sysctl_pagesize32, "Q", "");
 702 SYSCTL_PROC(_hw, OID_AUTO, busfrequency, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, 0, HW_LOCAL_FREQUENCY, sysctl_bus_frequency, "Q", "");
 703 SYSCTL_PROC(_hw, OID_AUTO, busfrequency_min, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, 0, HW_LOCAL_FREQUENCY_MIN, sysctl_bus_frequency, "Q", "");
 704 SYSCTL_PROC(_hw, OID_AUTO, busfrequency_max, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, 0, HW_LOCAL_FREQUENCY_MAX, sysctl_bus_frequency, "Q", "");
 705 SYSCTL_PROC(_hw, OID_AUTO, cpufrequency, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, 0, HW_LOCAL_FREQUENCY, sysctl_cpu_frequency, "Q", "");
 706 SYSCTL_PROC(_hw, OID_AUTO, cpufrequency_min, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, 0, HW_LOCAL_FREQUENCY_MIN, sysctl_cpu_frequency, "Q", "");
 707 SYSCTL_PROC(_hw, OID_AUTO, cpufrequency_max, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, 0, HW_LOCAL_FREQUENCY_MAX, sysctl_cpu_frequency, "Q", "");
 708 SYSCTL_PROC(_hw, OID_AUTO, cachelinesize, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, 0, HW_CACHELINE | CTLHW_RETQUAD, sysctl_hw_generic, "Q", "");
 709 SYSCTL_PROC(_hw, OID_AUTO, l1icachesize, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, 0, HW_L1ICACHESIZE | CTLHW_RETQUAD, sysctl_hw_generic, "Q", "");
 710 SYSCTL_PROC(_hw, OID_AUTO, l1dcachesize, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, 0, HW_L1DCACHESIZE | CTLHW_RETQUAD, sysctl_hw_generic, "Q", "");
 711 SYSCTL_PROC(_hw, OID_AUTO, l2cachesize, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, 0, HW_L2CACHESIZE | CTLHW_RETQUAD, sysctl_hw_generic, "Q", "");
 712 SYSCTL_PROC(_hw, OID_AUTO, l3cachesize, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, 0, HW_L3CACHESIZE | CTLHW_RETQUAD, sysctl_hw_generic, "Q", "");
 713 #if (defined(__arm__) || defined(__arm64__)) && (DEBUG || DEVELOPMENT)
 714 SYSCTL_QUAD(_hw, OID_AUTO, memfrequency, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, &gPEClockFrequencyInfo.mem_frequency_hz, "");
 715 SYSCTL_QUAD(_hw, OID_AUTO, memfrequency_min, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, &gPEClockFrequencyInfo.mem_frequency_min_hz, "");
 716 SYSCTL_QUAD(_hw, OID_AUTO, memfrequency_max, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, &gPEClockFrequencyInfo.mem_frequency_max_hz, "");
 717 SYSCTL_QUAD(_hw, OID_AUTO, prffrequency, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, &gPEClockFrequencyInfo.prf_frequency_hz, "");
 718 SYSCTL_QUAD(_hw, OID_AUTO, prffrequency_min, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, &gPEClockFrequencyInfo.prf_frequency_min_hz, "");
 719 SYSCTL_QUAD(_hw, OID_AUTO, prffrequency_max, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, &gPEClockFrequencyInfo.prf_frequency_max_hz, "");
 720 SYSCTL_QUAD(_hw, OID_AUTO, fixfrequency, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, &gPEClockFrequencyInfo.fix_frequency_hz, "");
 721 #endif /* __arm__ || __arm64__ */
 722 SYSCTL_PROC(_hw, OID_AUTO, tbfrequency, CTLTYPE_QUAD | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, 0, 0, sysctl_tbfrequency, "Q", "");
 723 #if XNU_TARGET_OS_OSX
 724 SYSCTL_QUAD(_hw, HW_MEMSIZE, memsize, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, &max_mem_actual, "");
 725 #else
 726 SYSCTL_QUAD(_hw, HW_MEMSIZE, memsize, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, &max_mem, "");
 727 #endif /* XNU_TARGET_OS_OSX */
 728 SYSCTL_INT(_hw, OID_AUTO, packages, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, &packages, 0, "");
 729 SYSCTL_PROC(_hw, OID_AUTO, osenvironment, CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, 0, 0, sysctl_osenvironment, "A", "");
 730 SYSCTL_PROC(_hw, OID_AUTO, ephemeral_storage, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, 0, 0, sysctl_ephemeral_storage, "I", "");
 731 SYSCTL_PROC(_hw, OID_AUTO, use_recovery_securityd, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, 0, 0, sysctl_use_recovery_securityd, "I", "");
 732 SYSCTL_PROC(_hw, OID_AUTO, use_kernelmanagerd, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, 0, 0, sysctl_use_kernelmanagerd, "I", "");
 733 SYSCTL_PROC(_hw, OID_AUTO, serialdebugmode, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_LOCKED, 0, 0, sysctl_serialdebugmode, "I", "");
 734
 735 /*
 736  * Optional CPU features can register nodes below hw.optional.
 737  *
 738  * If the feature is not present, the node should either not be registered,
 739  * or it should return 0.  If the feature is present, the node should return
 740  * 1.
 741  */
 742 SYSCTL_NODE(_hw, OID_AUTO, optional, CTLFLAG_RW | CTLFLAG_LOCKED, NULL, "optional features");
 743
 744 SYSCTL_INT(_hw_optional, OID_AUTO, floatingpoint, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (int *)NULL, 1, "");      /* always set */
 745
 746 /*
 747  * Optional device hardware features can be registered by drivers below hw.features
 748  */
 749 SYSCTL_EXTENSIBLE_NODE(_hw, OID_AUTO, features, CTLFLAG_RD | CTLFLAG_LOCKED, NULL, "hardware features");
 750
 751 /*
 752  * Deprecated variables.  These are supported for backwards compatibility
 753  * purposes only.  The MASKED flag requests that the variables not be
 754  * printed by sysctl(8) and similar utilities.
 755  *
 756  * The variables named *_compat here are int-sized versions of variables
 757  * that are now exported as quads.  The int-sized versions are normally
 758  * looked up only by number, wheras the quad-sized versions should be
 759  * looked up by name.
 760  *
 761  * The *_compat nodes are *NOT* visible within the kernel.
 762  */
 763
 764 SYSCTL_PROC(_hw, HW_PAGESIZE, pagesize_compat, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MASKED | CTLFLAG_LOCKED, 0, HW_PAGESIZE, sysctl_hw_generic, "I", "");
 765 SYSCTL_PROC(_hw, HW_BUS_FREQ, busfrequency_compat, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MASKED | CTLFLAG_LOCKED, 0, HW_LOCAL_FREQUENCY_CLOCK_RATE, sysctl_bus_frequency, "I", "");
 766 SYSCTL_PROC(_hw, HW_CPU_FREQ, cpufrequency_compat, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MASKED | CTLFLAG_LOCKED, 0, HW_LOCAL_FREQUENCY_CLOCK_RATE, sysctl_cpu_frequency, "I", "");
 767 SYSCTL_PROC(_hw, HW_CACHELINE, cachelinesize_compat, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MASKED | CTLFLAG_LOCKED, 0, HW_CACHELINE, sysctl_hw_generic, "I", "");
 768 SYSCTL_PROC(_hw, HW_L1ICACHESIZE, l1icachesize_compat, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MASKED | CTLFLAG_LOCKED, 0, HW_L1ICACHESIZE, sysctl_hw_generic, "I", "");
 769 SYSCTL_PROC(_hw, HW_L1DCACHESIZE, l1dcachesize_compat, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MASKED | CTLFLAG_LOCKED, 0, HW_L1DCACHESIZE, sysctl_hw_generic, "I", "");
 770 SYSCTL_PROC(_hw, HW_L2CACHESIZE, l2cachesize_compat, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MASKED | CTLFLAG_LOCKED, 0, HW_L2CACHESIZE, sysctl_hw_generic, "I", "");
 771 SYSCTL_PROC(_hw, HW_L3CACHESIZE, l3cachesize_compat, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MASKED | CTLFLAG_LOCKED, 0, HW_L3CACHESIZE, sysctl_hw_generic, "I", "");
 772 SYSCTL_COMPAT_INT(_hw, HW_TB_FREQ, tbfrequency_compat, CTLFLAG_RD | CTLFLAG_MASKED | CTLFLAG_LOCKED, &gPEClockFrequencyInfo.timebase_frequency_hz, 0, "");
 773 SYSCTL_PROC(_hw, HW_MACHINE, machine, CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MASKED | CTLFLAG_LOCKED, 0, HW_MACHINE, sysctl_hw_generic, "A", "");
 774 SYSCTL_PROC(_hw, HW_MODEL, model, CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MASKED | CTLFLAG_LOCKED, 0, HW_MODEL, sysctl_hw_generic, "A", "");
 775 SYSCTL_PROC(_hw, HW_TARGET, target, CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MASKED | CTLFLAG_LOCKED, 0, HW_TARGET, sysctl_hw_generic, "A", "");
 776 SYSCTL_PROC(_hw, HW_PRODUCT, product, CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MASKED | CTLFLAG_LOCKED, 0, HW_PRODUCT, sysctl_hw_generic, "A", "");
 777 SYSCTL_COMPAT_UINT(_hw, HW_PHYSMEM, physmem, CTLFLAG_RD | CTLFLAG_MASKED | CTLFLAG_LOCKED, &mem_size, 0, "");
 778 SYSCTL_PROC(_hw, HW_USERMEM, usermem, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MASKED | CTLFLAG_LOCKED, 0, HW_USERMEM, sysctl_hw_generic, "I", "");
 779 SYSCTL_PROC(_hw, HW_EPOCH, epoch, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MASKED | CTLFLAG_LOCKED, 0, HW_EPOCH, sysctl_hw_generic, "I", "");
 780 SYSCTL_PROC(_hw, HW_VECTORUNIT, vectorunit, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MASKED | CTLFLAG_LOCKED, 0, HW_VECTORUNIT, sysctl_hw_generic, "I", "");
 781 SYSCTL_PROC(_hw, HW_L2SETTINGS, l2settings, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MASKED | CTLFLAG_LOCKED, 0, HW_L2SETTINGS, sysctl_hw_generic, "I", "");
 782 SYSCTL_PROC(_hw, HW_L3SETTINGS, l3settings, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MASKED | CTLFLAG_LOCKED, 0, HW_L3SETTINGS, sysctl_hw_generic, "I", "");
 783 SYSCTL_INT(_hw, OID_AUTO, cputhreadtype, CTLFLAG_RD | CTLFLAG_NOAUTO | CTLFLAG_KERN | CTLFLAG_LOCKED, &cputhreadtype, 0, "");
 784
 785 #if defined(__i386__) || defined(__x86_64__) || CONFIG_X86_64_COMPAT
 786 static int
 787 sysctl_cpu_capability
 788 (__unused struct sysctl_oid *oidp, void *arg1, __unused int arg2, struct sysctl_req *req)
 789 {
 790         uint64_t    caps;
 791         caps = _get_cpu_capabilities();
 792
 793         uint64_t        mask = (uint64_t) (uintptr_t) arg1;
 794         boolean_t       is_capable = (caps & mask) != 0;
 795
 796         return SYSCTL_OUT(req, &is_capable, sizeof(is_capable));
 797 }
 798 #define capability(name) name
 799
 800
 801 SYSCTL_PROC(_hw_optional, OID_AUTO, mmx, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (void *) capability(kHasMMX), 0, sysctl_cpu_capability, "I", "");
 802 SYSCTL_PROC(_hw_optional, OID_AUTO, sse, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (void *) capability(kHasSSE), 0, sysctl_cpu_capability, "I", "");
 803 SYSCTL_PROC(_hw_optional, OID_AUTO, sse2, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (void *) capability(kHasSSE2), 0, sysctl_cpu_capability, "I", "");
 804 SYSCTL_PROC(_hw_optional, OID_AUTO, sse3, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (void *) capability(kHasSSE3), 0, sysctl_cpu_capability, "I", "");
 805 SYSCTL_PROC(_hw_optional, OID_AUTO, supplementalsse3, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (void *) capability(kHasSupplementalSSE3), 0, sysctl_cpu_capability, "I", "");
 806 SYSCTL_PROC(_hw_optional, OID_AUTO, sse4_1, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (void *) capability(kHasSSE4_1), 0, sysctl_cpu_capability, "I", "");
 807 SYSCTL_PROC(_hw_optional, OID_AUTO, sse4_2, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (void *) capability(kHasSSE4_2), 0, sysctl_cpu_capability, "I", "");
 808 /* "x86_64" is actually a preprocessor symbol on the x86_64 kernel, so we have to hack this */
 809 #undef x86_64
 810 SYSCTL_PROC(_hw_optional, OID_AUTO, x86_64, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (void *) capability(k64Bit), 0, sysctl_cpu_capability, "I", "");
 811 SYSCTL_PROC(_hw_optional, OID_AUTO, aes, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (void *) capability(kHasAES), 0, sysctl_cpu_capability, "I", "");
 812 SYSCTL_PROC(_hw_optional, OID_AUTO, avx1_0, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (void *) capability(kHasAVX1_0), 0, sysctl_cpu_capability, "I", "");
 813 SYSCTL_PROC(_hw_optional, OID_AUTO, rdrand, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (void *) capability(kHasRDRAND), 0, sysctl_cpu_capability, "I", "");
 814 SYSCTL_PROC(_hw_optional, OID_AUTO, f16c, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (void *) capability(kHasF16C), 0, sysctl_cpu_capability, "I", "");
 815 SYSCTL_PROC(_hw_optional, OID_AUTO, enfstrg, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (void *) capability(kHasENFSTRG), 0, sysctl_cpu_capability, "I", "");
 816 SYSCTL_PROC(_hw_optional, OID_AUTO, fma, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (void *) capability(kHasFMA), 0, sysctl_cpu_capability, "I", "");
 817 SYSCTL_PROC(_hw_optional, OID_AUTO, avx2_0, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (void *) capability(kHasAVX2_0), 0, sysctl_cpu_capability, "I", "");
 818 SYSCTL_PROC(_hw_optional, OID_AUTO, bmi1, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (void *) capability(kHasBMI1), 0, sysctl_cpu_capability, "I", "");
 819 SYSCTL_PROC(_hw_optional, OID_AUTO, bmi2, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (void *) capability(kHasBMI2), 0, sysctl_cpu_capability, "I", "");
 820 SYSCTL_PROC(_hw_optional, OID_AUTO, rtm, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (void *) capability(kHasRTM), 0, sysctl_cpu_capability, "I", "");
 821 SYSCTL_PROC(_hw_optional, OID_AUTO, hle, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (void *) capability(kHasHLE), 0, sysctl_cpu_capability, "I", "");
 822 SYSCTL_PROC(_hw_optional, OID_AUTO, adx, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (void *) capability(kHasADX), 0, sysctl_cpu_capability, "I", "");
 823 SYSCTL_PROC(_hw_optional, OID_AUTO, mpx, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (void *) capability(kHasMPX), 0, sysctl_cpu_capability, "I", "");
 824 SYSCTL_PROC(_hw_optional, OID_AUTO, sgx, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (void *) capability(kHasSGX), 0, sysctl_cpu_capability, "I", "");
 825 SYSCTL_PROC(_hw_optional, OID_AUTO, avx512f, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (void *) capability(kHasAVX512F), 0, sysctl_cpu_capability, "I", "");
 826 SYSCTL_PROC(_hw_optional, OID_AUTO, avx512cd, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (void *) capability(kHasAVX512CD), 0, sysctl_cpu_capability, "I", "");
 827 SYSCTL_PROC(_hw_optional, OID_AUTO, avx512dq, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (void *) capability(kHasAVX512DQ), 0, sysctl_cpu_capability, "I", "");
 828 SYSCTL_PROC(_hw_optional, OID_AUTO, avx512bw, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (void *) capability(kHasAVX512BW), 0, sysctl_cpu_capability, "I", "");
 829 SYSCTL_PROC(_hw_optional, OID_AUTO, avx512vl, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (void *) capability(kHasAVX512VL), 0, sysctl_cpu_capability, "I", "");
 830 SYSCTL_PROC(_hw_optional, OID_AUTO, avx512ifma, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (void *) capability(kHasAVX512IFMA), 0, sysctl_cpu_capability, "I", "");
 831 SYSCTL_PROC(_hw_optional, OID_AUTO, avx512vbmi, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, (void *) capability(kHasAVX512VBMI), 0, sysctl_cpu_capability, "I", "");
 832 #undef capability
 833 #endif /* !__i386__ && !__x86_64 && !CONFIG_X86_64_COMPAT */
 834
 835 #if defined (__arm__) || defined (__arm64__)
 836 int watchpoint_flag = 0;
 837 int breakpoint_flag = 0;
 838 int gNeon = 0;
 839 int gNeonHpfp = 0;
 840 int gNeonFp16 = 0;
 841 int gARMv81Atomics = 0;
 842 int gARMv8Crc32 = 0;
 843 int gARMv82FHM = 0;
 844 int gARMv82SHA512 = 0;
 845 int gARMv82SHA3 = 0;
 846
 847 #if defined (__arm__)
 848 int arm64_flag = 0;
 849 #elif defined (__arm64__) /* end __arm__*/
 850 int arm64_flag = 1;
 851 #else /* end __arm64__*/
 852 int arm64_flag = 0;
 853 #endif
 854
 855 SYSCTL_INT(_hw_optional, OID_AUTO, watchpoint, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, &watchpoint_flag, 0, "");
 856 SYSCTL_INT(_hw_optional, OID_AUTO, breakpoint, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, &breakpoint_flag, 0, "");
 857 SYSCTL_INT(_hw_optional, OID_AUTO, neon, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, &gNeon, 0, "");
 858 SYSCTL_INT(_hw_optional, OID_AUTO, neon_hpfp, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, &gNeonHpfp, 0, "");
 859 SYSCTL_INT(_hw_optional, OID_AUTO, neon_fp16, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, &gNeonFp16, 0, "");
 860 SYSCTL_INT(_hw_optional, OID_AUTO, armv8_1_atomics, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, &gARMv81Atomics, 0, "");
 861 SYSCTL_INT(_hw_optional, OID_AUTO, armv8_crc32, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, &gARMv8Crc32, 0, "");
 862 SYSCTL_INT(_hw_optional, OID_AUTO, armv8_2_fhm, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, &gARMv82FHM, 0, "");
 863 SYSCTL_INT(_hw_optional, OID_AUTO, armv8_2_sha512, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, &gARMv82SHA512, 0, "");
 864 SYSCTL_INT(_hw_optional, OID_AUTO, armv8_2_sha3, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, &gARMv82SHA3, 0, "");
 865
 866 #if DEBUG || DEVELOPMENT
 867 #if __ARM_KERNEL_PROTECT__
 868 static int arm_kernel_protect = 1;
 869 #else
 870 static int arm_kernel_protect = 0;
 871 #endif
 872 SYSCTL_INT(_hw_optional, OID_AUTO, arm_kernel_protect, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, &arm_kernel_protect, 0, "");
 873 #endif
 874
 875 #if DEBUG || DEVELOPMENT
 876 #if __ARM_WKDM_POPCNT__
 877 static int wkdm_popcount = 1;
 878 #else
 879 static int wkdm_popcount = 0;
 880 #endif
 881 SYSCTL_INT(_hw_optional, OID_AUTO, wkdm_popcount, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, &wkdm_popcount, 0, "");
 882 #endif
 883
 884 #if DEBUG || DEVELOPMENT
 885 #if __has_feature(ptrauth_calls)
 886 static int ptrauth = 1;
 887 #else
 888 static int ptrauth = 0;
 889 #endif
 890 SYSCTL_INT(_hw_optional, OID_AUTO, ptrauth, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, &ptrauth, 0, "");
 891 #endif
 892
 893 /*
 894  * Without this little ifdef dance, the preprocessor replaces "arm64" with "1",
 895  * leaving us with a less-than-helpful sysctl.hwoptional.1.
 896  */
 897 #ifdef arm64
 898 #undef arm64
 899 SYSCTL_INT(_hw_optional, OID_AUTO, arm64, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, &arm64_flag, 0, "");
 900 #define arm64 1
 901 #else
 902 SYSCTL_INT(_hw_optional, OID_AUTO, arm64, CTLFLAG_RD | CTLFLAG_KERN | CTLFLAG_LOCKED, &arm64_flag, 0, "");
 903 #endif
 904 #endif /* !__arm__ && ! __arm64__ */
 905
 906
 907 /******************************************************************************
 908  * Generic MIB initialisation.
 909  *
 910  * This is a hack, and should be replaced with SYSINITs
 911  * at some point.
 912  */
 913 void
 914 sysctl_mib_init(void)
 915 {
 916 #if defined(__i386__) || defined (__x86_64__)
 917         cpu64bit = (_get_cpu_capabilities() & k64Bit) == k64Bit;
 918 #elif defined(__arm__) || defined (__arm64__)
 919         cpu64bit = (cpu_type() & CPU_ARCH_ABI64) == CPU_ARCH_ABI64;
 920 #else
 921 #error Unsupported arch
 922 #endif
 923
 924 #if defined (__i386__) || defined (__x86_64__)
 925         /* hw.cacheconfig */
 926         cacheconfig[0] = ml_cpu_cache_sharing(0);
 927         cacheconfig[1] = ml_cpu_cache_sharing(1);
 928         cacheconfig[2] = ml_cpu_cache_sharing(2);
 929         cacheconfig[3] = ml_cpu_cache_sharing(3);
 930         cacheconfig[4] = 0;
 931
 932         /* hw.cachesize */
 933         cachesize[0] = ml_cpu_cache_size(0);
 934         cachesize[1] = ml_cpu_cache_size(1);
 935         cachesize[2] = ml_cpu_cache_size(2);
 936         cachesize[3] = ml_cpu_cache_size(3);
 937         cachesize[4] = 0;
 938
 939         /* hw.packages */
 940         packages = (int)(roundup(ml_cpu_cache_sharing(0), cpuid_info()->thread_count)
 941             / cpuid_info()->thread_count);
 942
 943 #elif defined(__arm__) || defined(__arm64__) /* end __i386 */
 944         watchpoint_flag = arm_debug_info()->num_watchpoint_pairs;
 945         breakpoint_flag = arm_debug_info()->num_breakpoint_pairs;
 946
 947         arm_mvfp_info_t *mvfp_info = arm_mvfp_info();
 948         gNeon = mvfp_info->neon;
 949         gNeonHpfp = mvfp_info->neon_hpfp;
 950         gNeonFp16 = mvfp_info->neon_fp16;
 951
 952         cacheconfig[0] = ml_wait_max_cpus();
 953         cacheconfig[1] = 1;
 954         cacheconfig[2] = cache_info()->c_l2size ? 1:0;
 955         cacheconfig[3] = 0;
 956         cacheconfig[4] = 0;
 957         cacheconfig[5] = 0;
 958         cacheconfig[6] = 0;
 959
 960         cachesize[0] = ml_get_machine_mem();
 961         cachesize[1] = cache_info()->c_dsize; /* Using the DCache */
 962         cachesize[2] = cache_info()->c_l2size;
 963         cachesize[3] = 0;
 964         cachesize[4] = 0;
 965
 966         packages = 1;
 967 #else
 968 #error unknown architecture
 969 #endif /* !__i386__ && !__x86_64 && !__arm__ && !__arm64__ */
 970 }
 971
 972 __startup_func
 973 static void
 974 sysctl_mib_startup(void)
 975 {
 976         cputhreadtype = cpu_threadtype();
 977
 978         /*
 979          * Populate the optional portion of the hw.* MIB.
 980          *
 981          * XXX This could be broken out into parts of the code
 982          *     that actually directly relate to the functions in
 983          *     question.
 984          */
 985
 986         if (cputhreadtype != CPU_THREADTYPE_NONE) {
 987                 sysctl_register_oid_early(&sysctl__hw_cputhreadtype);
 988         }
 989
 990 }
 991 STARTUP(SYSCTL, STARTUP_RANK_MIDDLE, sysctl_mib_startup);